
- Steel Hex Nut, Zinc Plated Finish, Grade C, Self-Locking Top Lock, Right Hand Threads, 9/16"-18 Threads (Pack of 25)
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From $12.35 (New)

From $12.35 (New)

| Latest | $12.35 23 hrs ago |
| Highest | $13.32 Oct 18, '15 |
| Lowest | $6.40 Mar 29, '16 |
| Average | $6.43 (30d avg) $8.35 (90d avg) $10.60 (180d avg) $10.92 (Lifetime average) |
| Added | Sep 21, 2015 |
30 day average: 110,073
90 day average: 263,646
The grade C steel hex nut has a self-locking top-lock design and a zinc plating. It has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the nut. The self-locking top threads are deformed to help prevent loosening when the nut is threaded to another component. Grade C steel, composed of carbon steel, is often used in applications where strength is the primary consideration and is harder than Grade A steel. The zinc plating offers corrosion resistance and has a reflective appearance.Nuts are internally threaded fasteners that are used with bolts and threaded rods and studs to connect components. Several different nut styles fit a variety of application and installation requirements. Some styles, such as hex nuts, acorn nuts, flange nuts, and coupling nuts, must be tightened with a tool. Others, such as eye nuts, thumb nuts, and wing nuts, can be tightened by hand. Some nuts have a self-locking mechanism, such as a nylon patch or distorted threads, that makes them suitable for applications with a high amount of vibration.